Read up on it some, and apparently all the glBegin/glEnd/glVertex functions are deprecated?
Does anyone know if switching to vertexBuffers for this kind of thing really provide a significant speed boost?

Edit: Also, was the slowness actually in the framerate ( tilde will pull up a console with framerate displayed), or just in game speed? Because the king is way slow of a unit, maybe too slow for the player to just start out with.

Firstly, congratulations on making it to the end of your (first?) uDG. That alone is an impressive accomplishment.

I played Reign for a bit, and put down some thoughts (hopefully constructive) here.
1. The intro is cool. There’s a typo at the “Dawn” part - there’s a “wher” instead of a “where”.
2. I was kind of confused at the beginning - the camera starts out focused on the black pieces, but I’m controlling the white pieces(?), so I had to do some looking around to figure out how exactly I was supposed to move.
3. I had trouble with the movement as well - I got my king to climb up a tall cliff, but I couldn’t get him to climb back down to attack the black pieces, so I couldn’t even get into the combat part of the game. Am I missing something there?
4. I couldn’t figure out the blue lines either. Is it some kind of pathfinding display?
5. From the perspective I was in, the pieces just looked like black and white dots - I couldn’t even tell the king was a chess piece until I zoomed in pretty close, which also contributed to my confusion at the beginning.
6. Kudos on the explanatory text - maybe when you get a bit more time a tutorial level would be in order?

Overall, I think you’ve got a pretty neat game/story concept here, and would love to play it if you take it a bit further with the gameplay and graphics, and add some nice music/sound effects.